Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Magnetic field effect in natural cryptochrome explored with model compound. / Paul, Shubhajit; Kiryutin, Alexey S.; Guo, Jinping и др.
в: Scientific Reports, Том 7, № 1, 11892, 19.09.2017, стр. 11892.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Magnetic field effect in natural cryptochrome explored with model compound
AU - Paul, Shubhajit
AU - Kiryutin, Alexey S.
AU - Guo, Jinping
AU - Ivanov, Konstantin L.
AU - Matysik, Jörg
AU - Yurkovskaya, Alexandra V.
AU - Wang, Xiaojie
N1 - Publisher Copyright: © 2017 The Author(s).
PY - 2017/9/19
Y1 - 2017/9/19
N2 - Many animals sense the Earth's magnetic-field and use it for navigation. It is proposed that a light-dependent quantum effect in cryptochrome proteins, residing in the retina, allows for such an iron-free spin-chemical compass. The photochemical processes, spin-dynamics and its magnetic field dependence in natural cryptochrome are not fully understood by the in vivo and in vitro studies. For a deeper insight into these biophysical mechanisms in cryptochrome, we had introduced a flavin-tryptophan dyad (F10T). Here we present the magnetic field dependence of 1H photo-CIDNP NMR on F10T and a theoretical model for low-field photo-CIDNP of F10T. This model provides mixing mechanism of energy-levels and spin-dynamics at low magnetic fields. Photo-CIDNP has been observed even at Earth's magnetic field (∼0.05 mT). These experiments prove F10T to be an excellent model compound establishing the key mechanism of avian-magnetoreception and provide insight into the optimal behaviour of cryptochrome at Earth's magnetic field.
AB - Many animals sense the Earth's magnetic-field and use it for navigation. It is proposed that a light-dependent quantum effect in cryptochrome proteins, residing in the retina, allows for such an iron-free spin-chemical compass. The photochemical processes, spin-dynamics and its magnetic field dependence in natural cryptochrome are not fully understood by the in vivo and in vitro studies. For a deeper insight into these biophysical mechanisms in cryptochrome, we had introduced a flavin-tryptophan dyad (F10T). Here we present the magnetic field dependence of 1H photo-CIDNP NMR on F10T and a theoretical model for low-field photo-CIDNP of F10T. This model provides mixing mechanism of energy-levels and spin-dynamics at low magnetic fields. Photo-CIDNP has been observed even at Earth's magnetic field (∼0.05 mT). These experiments prove F10T to be an excellent model compound establishing the key mechanism of avian-magnetoreception and provide insight into the optimal behaviour of cryptochrome at Earth's magnetic field.
KW - ARABIDOPSIS-THALIANA
KW - CHEMICAL COMPASS
KW - DEPENDENCE
KW - DYNAMIC NUCLEAR-POLARIZATION
KW - MAGNETORECEPTION
KW - MECHANISM
KW - MULTINUCLEAR RADICAL PAIRS
KW - NMR
KW - PHOTO-CIDNP
KW - PHOTOACTIVATION REACTION
UR - http://www.scopus.com/inward/record.url?scp=85029871069&partnerID=8YFLogxK
U2 - 10.1038/s41598-017-10356-4
DO - 10.1038/s41598-017-10356-4
M3 - Article
C2 - 28928466
AN - SCOPUS:85029871069
VL - 7
SP - 11892
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
IS - 1
M1 - 11892
ER -
ID: 9866055